The water caltrop (Trapa natans L.) in Ukraine: new areas of expansion in the north of the country and contradictions in concepts of its protection and population management
This paper reviews data on the distribution of the water caltrop Trapa natans L. in Ukraine. This relict species (listed in the Red Data Book of Ukraine) had strongly declined in the early 1979s, but has now locally recovered and even excessively spread in the upper reaches of the Kaniv and Kyiv res...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
I. Merzlikin [verfasserIn] O. Savitsky [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch ; Ukrainisch |
| Erschienen: |
2021 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
In: Geo&Bio - National Museum of Natural History, National Academy of Sciences of Ukraine, 2022, 21(2021), Seite 211-219 |
|---|---|
| Übergeordnetes Werk: |
volume:21 ; year:2021 ; pages:211-219 |
| Links: |
Link aufrufen |
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| DOI / URN: |
10.15407/gb2116 |
|---|
| Katalog-ID: |
DOAJ078848067 |
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| 520 | |a This paper reviews data on the distribution of the water caltrop Trapa natans L. in Ukraine. This relict species (listed in the Red Data Book of Ukraine) had strongly declined in the early 1979s, but has now locally recovered and even excessively spread in the upper reaches of the Kaniv and Kyiv reservoirs on the Dnipro River. Therefore, both protection and regulation of its local abundance are on the agenda today in the country. Work is currently underway to monitor the population of the species and search for new habitats. Previously the presence of the water caltrop in Sumy Oblast has been documented only in floodplain waterbodies of the Desna River. On 18 June 2017, we found four new record localities of Trapa natans in the Psel River within the city boundaries of Sumy (north-eastern Ukraine). All of them were located along the right bank of the river. The four groups of plants were comprised of 8, 70, 2, and 100 individual plants, respectively, growing at a depth of 0.5–3.2 m and about 5–15 m far from the riverbank. A second visit to the location on 15 August 2017 revealed a total of 591 rosettes. Three years later (visited on 28 August 2021), the number of individual caltrop plants in this location increased as many as eight times (total of 4766). The plant spread 3 km further downstream and its mats (variable in size) could be found at both banks of the river. The transformation of the Psel River from one of the fastest tributaries of the Dnipro into a cascade of numerous channel reservoirs led to a slowdown in water flow and the continuous siltation of the bottom created favourable conditions for the water caltrop. Most likely, seeds of this plant were artificially introduced into the river (possibly by aquaculture enthusiasts) a few years prior to the first finding and the plant spread downstream. This was facilitated by the spring flood, which carried the fruit down the river. In summer, the current carries plants that were uprooted by vacationers. Leaves of the water caltrop were seen consumed by the mallard Anas platyrhynchos L., whereas seeds of the plant were eaten by the European water vole Arvicola amphibius. The newly discovered occurrence spot of the water caltrop is currently the only one on the Psel River and it complements the information on the current distribution of this rare plant species. It is located about 145 km south-east from the closest population on the Desna River, which described the presence of this species in Sumy Oblast. | ||
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10.15407/gb2116 doi (DE-627)DOAJ078848067 (DE-599)DOAJ119f9175df2041d39c548d2ddc6d41d4 DE-627 ger DE-627 rakwb eng ukr QH301-705.5 QE1-996.5 I. Merzlikin verfasserin aut The water caltrop (Trapa natans L.) in Ukraine: new areas of expansion in the north of the country and contradictions in concepts of its protection and population management 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This paper reviews data on the distribution of the water caltrop Trapa natans L. in Ukraine. This relict species (listed in the Red Data Book of Ukraine) had strongly declined in the early 1979s, but has now locally recovered and even excessively spread in the upper reaches of the Kaniv and Kyiv reservoirs on the Dnipro River. Therefore, both protection and regulation of its local abundance are on the agenda today in the country. Work is currently underway to monitor the population of the species and search for new habitats. Previously the presence of the water caltrop in Sumy Oblast has been documented only in floodplain waterbodies of the Desna River. On 18 June 2017, we found four new record localities of Trapa natans in the Psel River within the city boundaries of Sumy (north-eastern Ukraine). All of them were located along the right bank of the river. The four groups of plants were comprised of 8, 70, 2, and 100 individual plants, respectively, growing at a depth of 0.5–3.2 m and about 5–15 m far from the riverbank. A second visit to the location on 15 August 2017 revealed a total of 591 rosettes. Three years later (visited on 28 August 2021), the number of individual caltrop plants in this location increased as many as eight times (total of 4766). The plant spread 3 km further downstream and its mats (variable in size) could be found at both banks of the river. The transformation of the Psel River from one of the fastest tributaries of the Dnipro into a cascade of numerous channel reservoirs led to a slowdown in water flow and the continuous siltation of the bottom created favourable conditions for the water caltrop. Most likely, seeds of this plant were artificially introduced into the river (possibly by aquaculture enthusiasts) a few years prior to the first finding and the plant spread downstream. This was facilitated by the spring flood, which carried the fruit down the river. In summer, the current carries plants that were uprooted by vacationers. Leaves of the water caltrop were seen consumed by the mallard Anas platyrhynchos L., whereas seeds of the plant were eaten by the European water vole Arvicola amphibius. The newly discovered occurrence spot of the water caltrop is currently the only one on the Psel River and it complements the information on the current distribution of this rare plant species. It is located about 145 km south-east from the closest population on the Desna River, which described the presence of this species in Sumy Oblast. monitoring environmental management aquatic vascular plants red data book of ukraine conservation expansion Biology (General) Geology O. Savitsky verfasserin aut In Geo&Bio National Museum of Natural History, National Academy of Sciences of Ukraine, 2022 21(2021), Seite 211-219 (DE-627)1812793421 26176165 nnns volume:21 year:2021 pages:211-219 https://doi.org/10.15407/gb2116 kostenfrei https://doaj.org/article/119f9175df2041d39c548d2ddc6d41d4 kostenfrei http://museumkiev.org/public/visnyk/21_2021/gb2116-merzlikin.html kostenfrei https://doaj.org/toc/2617-6157 Journal toc kostenfrei https://doaj.org/toc/2617-6165 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 21 2021 211-219 |
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10.15407/gb2116 doi (DE-627)DOAJ078848067 (DE-599)DOAJ119f9175df2041d39c548d2ddc6d41d4 DE-627 ger DE-627 rakwb eng ukr QH301-705.5 QE1-996.5 I. Merzlikin verfasserin aut The water caltrop (Trapa natans L.) in Ukraine: new areas of expansion in the north of the country and contradictions in concepts of its protection and population management 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This paper reviews data on the distribution of the water caltrop Trapa natans L. in Ukraine. This relict species (listed in the Red Data Book of Ukraine) had strongly declined in the early 1979s, but has now locally recovered and even excessively spread in the upper reaches of the Kaniv and Kyiv reservoirs on the Dnipro River. Therefore, both protection and regulation of its local abundance are on the agenda today in the country. Work is currently underway to monitor the population of the species and search for new habitats. Previously the presence of the water caltrop in Sumy Oblast has been documented only in floodplain waterbodies of the Desna River. On 18 June 2017, we found four new record localities of Trapa natans in the Psel River within the city boundaries of Sumy (north-eastern Ukraine). All of them were located along the right bank of the river. The four groups of plants were comprised of 8, 70, 2, and 100 individual plants, respectively, growing at a depth of 0.5–3.2 m and about 5–15 m far from the riverbank. A second visit to the location on 15 August 2017 revealed a total of 591 rosettes. Three years later (visited on 28 August 2021), the number of individual caltrop plants in this location increased as many as eight times (total of 4766). The plant spread 3 km further downstream and its mats (variable in size) could be found at both banks of the river. The transformation of the Psel River from one of the fastest tributaries of the Dnipro into a cascade of numerous channel reservoirs led to a slowdown in water flow and the continuous siltation of the bottom created favourable conditions for the water caltrop. Most likely, seeds of this plant were artificially introduced into the river (possibly by aquaculture enthusiasts) a few years prior to the first finding and the plant spread downstream. This was facilitated by the spring flood, which carried the fruit down the river. In summer, the current carries plants that were uprooted by vacationers. Leaves of the water caltrop were seen consumed by the mallard Anas platyrhynchos L., whereas seeds of the plant were eaten by the European water vole Arvicola amphibius. The newly discovered occurrence spot of the water caltrop is currently the only one on the Psel River and it complements the information on the current distribution of this rare plant species. It is located about 145 km south-east from the closest population on the Desna River, which described the presence of this species in Sumy Oblast. monitoring environmental management aquatic vascular plants red data book of ukraine conservation expansion Biology (General) Geology O. Savitsky verfasserin aut In Geo&Bio National Museum of Natural History, National Academy of Sciences of Ukraine, 2022 21(2021), Seite 211-219 (DE-627)1812793421 26176165 nnns volume:21 year:2021 pages:211-219 https://doi.org/10.15407/gb2116 kostenfrei https://doaj.org/article/119f9175df2041d39c548d2ddc6d41d4 kostenfrei http://museumkiev.org/public/visnyk/21_2021/gb2116-merzlikin.html kostenfrei https://doaj.org/toc/2617-6157 Journal toc kostenfrei https://doaj.org/toc/2617-6165 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 21 2021 211-219 |
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The water caltrop (Trapa natans L.) in Ukraine: new areas of expansion in the north of the country and contradictions in concepts of its protection and population management |
| abstract |
This paper reviews data on the distribution of the water caltrop Trapa natans L. in Ukraine. This relict species (listed in the Red Data Book of Ukraine) had strongly declined in the early 1979s, but has now locally recovered and even excessively spread in the upper reaches of the Kaniv and Kyiv reservoirs on the Dnipro River. Therefore, both protection and regulation of its local abundance are on the agenda today in the country. Work is currently underway to monitor the population of the species and search for new habitats. Previously the presence of the water caltrop in Sumy Oblast has been documented only in floodplain waterbodies of the Desna River. On 18 June 2017, we found four new record localities of Trapa natans in the Psel River within the city boundaries of Sumy (north-eastern Ukraine). All of them were located along the right bank of the river. The four groups of plants were comprised of 8, 70, 2, and 100 individual plants, respectively, growing at a depth of 0.5–3.2 m and about 5–15 m far from the riverbank. A second visit to the location on 15 August 2017 revealed a total of 591 rosettes. Three years later (visited on 28 August 2021), the number of individual caltrop plants in this location increased as many as eight times (total of 4766). The plant spread 3 km further downstream and its mats (variable in size) could be found at both banks of the river. The transformation of the Psel River from one of the fastest tributaries of the Dnipro into a cascade of numerous channel reservoirs led to a slowdown in water flow and the continuous siltation of the bottom created favourable conditions for the water caltrop. Most likely, seeds of this plant were artificially introduced into the river (possibly by aquaculture enthusiasts) a few years prior to the first finding and the plant spread downstream. This was facilitated by the spring flood, which carried the fruit down the river. In summer, the current carries plants that were uprooted by vacationers. Leaves of the water caltrop were seen consumed by the mallard Anas platyrhynchos L., whereas seeds of the plant were eaten by the European water vole Arvicola amphibius. The newly discovered occurrence spot of the water caltrop is currently the only one on the Psel River and it complements the information on the current distribution of this rare plant species. It is located about 145 km south-east from the closest population on the Desna River, which described the presence of this species in Sumy Oblast. |
| abstractGer |
This paper reviews data on the distribution of the water caltrop Trapa natans L. in Ukraine. This relict species (listed in the Red Data Book of Ukraine) had strongly declined in the early 1979s, but has now locally recovered and even excessively spread in the upper reaches of the Kaniv and Kyiv reservoirs on the Dnipro River. Therefore, both protection and regulation of its local abundance are on the agenda today in the country. Work is currently underway to monitor the population of the species and search for new habitats. Previously the presence of the water caltrop in Sumy Oblast has been documented only in floodplain waterbodies of the Desna River. On 18 June 2017, we found four new record localities of Trapa natans in the Psel River within the city boundaries of Sumy (north-eastern Ukraine). All of them were located along the right bank of the river. The four groups of plants were comprised of 8, 70, 2, and 100 individual plants, respectively, growing at a depth of 0.5–3.2 m and about 5–15 m far from the riverbank. A second visit to the location on 15 August 2017 revealed a total of 591 rosettes. Three years later (visited on 28 August 2021), the number of individual caltrop plants in this location increased as many as eight times (total of 4766). The plant spread 3 km further downstream and its mats (variable in size) could be found at both banks of the river. The transformation of the Psel River from one of the fastest tributaries of the Dnipro into a cascade of numerous channel reservoirs led to a slowdown in water flow and the continuous siltation of the bottom created favourable conditions for the water caltrop. Most likely, seeds of this plant were artificially introduced into the river (possibly by aquaculture enthusiasts) a few years prior to the first finding and the plant spread downstream. This was facilitated by the spring flood, which carried the fruit down the river. In summer, the current carries plants that were uprooted by vacationers. Leaves of the water caltrop were seen consumed by the mallard Anas platyrhynchos L., whereas seeds of the plant were eaten by the European water vole Arvicola amphibius. The newly discovered occurrence spot of the water caltrop is currently the only one on the Psel River and it complements the information on the current distribution of this rare plant species. It is located about 145 km south-east from the closest population on the Desna River, which described the presence of this species in Sumy Oblast. |
| abstract_unstemmed |
This paper reviews data on the distribution of the water caltrop Trapa natans L. in Ukraine. This relict species (listed in the Red Data Book of Ukraine) had strongly declined in the early 1979s, but has now locally recovered and even excessively spread in the upper reaches of the Kaniv and Kyiv reservoirs on the Dnipro River. Therefore, both protection and regulation of its local abundance are on the agenda today in the country. Work is currently underway to monitor the population of the species and search for new habitats. Previously the presence of the water caltrop in Sumy Oblast has been documented only in floodplain waterbodies of the Desna River. On 18 June 2017, we found four new record localities of Trapa natans in the Psel River within the city boundaries of Sumy (north-eastern Ukraine). All of them were located along the right bank of the river. The four groups of plants were comprised of 8, 70, 2, and 100 individual plants, respectively, growing at a depth of 0.5–3.2 m and about 5–15 m far from the riverbank. A second visit to the location on 15 August 2017 revealed a total of 591 rosettes. Three years later (visited on 28 August 2021), the number of individual caltrop plants in this location increased as many as eight times (total of 4766). The plant spread 3 km further downstream and its mats (variable in size) could be found at both banks of the river. The transformation of the Psel River from one of the fastest tributaries of the Dnipro into a cascade of numerous channel reservoirs led to a slowdown in water flow and the continuous siltation of the bottom created favourable conditions for the water caltrop. Most likely, seeds of this plant were artificially introduced into the river (possibly by aquaculture enthusiasts) a few years prior to the first finding and the plant spread downstream. This was facilitated by the spring flood, which carried the fruit down the river. In summer, the current carries plants that were uprooted by vacationers. Leaves of the water caltrop were seen consumed by the mallard Anas platyrhynchos L., whereas seeds of the plant were eaten by the European water vole Arvicola amphibius. The newly discovered occurrence spot of the water caltrop is currently the only one on the Psel River and it complements the information on the current distribution of this rare plant species. It is located about 145 km south-east from the closest population on the Desna River, which described the presence of this species in Sumy Oblast. |
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| title_short |
The water caltrop (Trapa natans L.) in Ukraine: new areas of expansion in the north of the country and contradictions in concepts of its protection and population management |
| url |
https://doi.org/10.15407/gb2116 https://doaj.org/article/119f9175df2041d39c548d2ddc6d41d4 http://museumkiev.org/public/visnyk/21_2021/gb2116-merzlikin.html https://doaj.org/toc/2617-6157 https://doaj.org/toc/2617-6165 |
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